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Operation
Service Menu
Calibrate Pressure Zero
Calibrate Pressure Span
3-90
Model 146i Instruction Manual
PRESSURE SENSOR CAL:
>ZERO
SPAN
SET DEFAULTS
OPER
MODE
The Calibrate Pressure Zero screen calibrates the pressure sensor at zero
pressure.
Note A vacuum pump must be connected to the pressure sensor before
performing the zero calibration.
In the Main Menu, choose Service > Pressure Calibration > Zero.
●
CALIBRATE PRESSURE ZERO:
CURRENTLY:
SET TO:
CONNECT VACUUM PUMP AND
SAVE ZERO PRESSURE
OPER
MODE
The Calibrate Pressure Span screen is used to view and set the pressure
sensor calibration span point.
Note The plumbing going to the pressure sensor should be disconnected so
the sensor is reading ambient pressure before performing the span
calibration. The operator should use an independent barometer to measure
the ambient pressure and enter the value on this screen before
calibrating.
▲
In the Main Menu, choose Service > Pressure Calibration > Span.
●
72
1.1447
DIAGS ALARM
▲
753.0 mmHg
0.0 mmHg
DIAGS ALARM
Thermo Fisher Scientific
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